Article
Telecommunications
Boyi Tang, Hao Xu, Kai-Kit Wong, Kin-Fai Tong, Yangyang Zhang, Chan-Byoung Chae
Summary: Recent research has discovered that the spatial moments of deep fades of interference signals caused by multipath can be exploited by a new position-switchable antenna technology called fluid antenna for multiple access. In this letter, the fluid antenna is used to overcome artificial noise (AN) signals, while a base station (BS) transmits an information-bearing signal to a legitimate user and an AN signal to a potential eavesdropper in a physical layer security setup. Power allocation of the information-bearing and AN signals is studied to enhance secrecy rate, considering perfect and imperfect channel state information (CSI) scenarios. Simulation results demonstrate that the proposed system achieves a comparable secrecy rate to that of maximal ratio combining (MRC) with many antennas, and is robust to CSI uncertainties of the eavesdropper, requiring no power allocation or beamforming at the BS.
IEEE COMMUNICATIONS LETTERS
(2023)
Review
Engineering, Multidisciplinary
Megha. S. Kumar, R. Ramanathan, M. Jayakumar
Summary: This article mainly highlights the importance of physical layer security in wireless network security and provides a systematic classification and survey of keyless schemes. Additionally, it discusses the application of keyless PLS in IoT and explores emerging areas for enhancing physical layer security, as well as existing challenges.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2022)
Article
Engineering, Civil
Meiling Li, Xiaoxia Yang, Fazlullah Khan, Mian Ahmad Jan, Wei Chen, Zhu Han
Summary: This paper proposes a new scheme for emergency message transmission between autonomous vehicles and pedestrians, which improves the system security performance by using noise generated by ambient radio frequency sources. The theoretical and simulation results show that this scheme can enhance the security performance of the system to some extent.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
T. Nimi, A. V. Babu
Summary: The objective of this paper is to propose techniques for enhancing the physical layer security performance of half-duplex cooperative non-orthogonal multiple access network in the presence of an external passive eavesdropper. An artificial noise-aided framework is proposed and approximate analytical expressions for the secrecy outage probabilities of the downlink users are derived. It is demonstrated that the proposed framework significantly reduces the secrecy outage probabilities of the users and resolves the zero-diversity order problem. Optimal power allocation coefficients are determined to further enhance the physical layer security performance, leading to a significant reduction of the system secrecy outage probability while lowering the secrecy outage probabilities of the users.
PHYSICAL COMMUNICATION
(2023)
Article
Engineering, Electrical & Electronic
Meng Lu, Fasong Wang, Rui Li, Peng Sun, Yanbin Zhang
Summary: This paper investigates the physical layer security (PLS) of the generalized spatial modulation (GSM) enabled indoor multiple-input single-output (MISO) visible light communication (VLC) downlink. An optical artificial noise (OAN)-assisted scheme is proposed to enhance the secrecy of the system. The secrecy performance is analyzed using a finite discrete distribution of input signals, and the achievable secrecy rate (ASR) is evaluated. The particle swarm optimization (PSO) algorithm is explored to solve the power allocation problem and maximize the ASR.
DIGITAL SIGNAL PROCESSING
(2023)
Article
Multidisciplinary Sciences
Pengfei Hou, Jianping Gong, Jumin Zhao
Summary: This paper proposed a scheme to enhance the physical layer security of the ambient backscatter communication (ABC) system by injecting artificial noise from the tag end (IANT). The scheme selects the best tag to communicate with the reader based on channel quality and another tag to generate artificial noise to disrupt eavesdroppers. By generating noise copies in the reader, the interference of artificial noise on the received signal is reduced. Simulation results demonstrate the superiority of the proposed IANT scheme in achieving system secrecy rate and enhancing physical layer security.
Article
Computer Science, Theory & Methods
Lin Hu, Shuai Tan, Hong Wen, Jinsong Wu, Jiabing Fan, Songlin Chen, Jie Tang
Summary: We investigate the physical layer security in multi-user interference networks and propose an artificial noise assisted interference alignment scheme for security enhancement. We establish a tighter necessary condition for interference alignment feasibility and provide practical guidelines for system designs. Numerical results demonstrate that our design can enhance both quality and security of the secret signal, suitable for physical layer security in interference networks.
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
(2023)
Article
Telecommunications
T. Nimi, A. V. Babu
Summary: This paper investigates the physical layer security performance of full-duplex cooperative non-orthogonal multiple access network in the presence of an external passive eavesdropper. The proposed artificial noise-aided framework significantly enhances the secrecy outage probabilities of the users and the system secrecy outage probability of the network. The optimal power allocation coefficient method further improves the performance by minimizing the system secrecy outage probability.
TELECOMMUNICATION SYSTEMS
(2023)
Article
Computer Science, Information Systems
Sultangali Arzykulov, Abdulkadir Celik, Galymzhan Nauryzbayev, Ahmed M. Eltawil
Summary: This letter proposes a virtual partitioning method for reconfigurable intelligent surfaces (RIS) to enhance the intended signal for a legitimate user and increase the impact of artificial noise (AN) on an illegitimate user. The optimization of partitioning ratio and transmit power levels is performed to maximize secrecy capacity and establish a secure link. Simulation results demonstrate the effectiveness of the proposed RIS-partitioning method.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2023)
Article
Computer Science, Theory & Methods
Farshad Rostami Ghadi, F. Javier Lopez-Martinez, Wei-Ping Zhu, Jean-Marie Gorce
Summary: The impact of side information (SI) on the performance of physical layer security (PLS) under correlated fading channels is investigated in this paper. Closed-form expressions for the average secrecy capacity (ASC) and secrecy outage probability (SOP) under positive/negative dependence conditions are derived by considering non-causally known SI at the transmitter and utilizing the copula technique to describe the fading correlation. It is indicated that considering such knowledge at the transmitter is beneficial for system performance and ensures reliable communication with higher rates, as it improves the SOP and brings higher values of the ASC.
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
(2022)
Article
Computer Science, Information Systems
Zhangyu Liu, Ji Wang, Hao Jiang, Jun Wang, Xingwang Li, Wenwu Xie
Summary: In this study, we consider an IRS-assisted MISO CR system to enhance the confidentiality rate in wireless communication by modulating the amplitude and phase shift of the channel. By jointly optimizing the beamforming vector and artificial noise constraint matrix at SR-TX, along with the phase shift matrix of IRS, we minimize the SR's transmit power under IT and confidentiality capacity constraints. Numerical results show that different transmit antenna values and IRS element numbers at SR-TX can significantly reduce transmit power while ensuring secure communication.
Article
Computer Science, Information Systems
Inkyu Bang, Jong-Hyun Kim, Taehoon Kim
Summary: This article introduces a physical-layer security enhancement technique based on artificial noise for secure device-to-device (D2D) communications in vehicular platooning networks. The technique involves generating artificial noise to enhance the secrecy of D2D communications and prevent information leakage to potential eavesdropping vehicles.
Article
Chemistry, Multidisciplinary
Yebo Gu, Bowen Huang, Zhilu Wu
Summary: This paper explores the physical layer security problem of wireless communication systems and introduces and studies a new secrecy capacity optimization artificial noise method. By effectively utilizing transmission power and taking into account channel estimation errors, a significant increase in secrecy capacity can be achieved. The improved sequence quadratic program (ISQP) is shown to be better than other algorithms in solving the non-convex optimization problem of power allocation.
APPLIED SCIENCES-BASEL
(2021)
Article
Computer Science, Theory & Methods
Gabriele Oligeri, Savio Sciancalepore, Simone Raponi, Roberto Di Pietro
Summary: Physical-layer security is an important topic in wireless communications, and recent research has focused on using deep learning algorithms for sender authentication. Prior work has mainly focused on terrestrial wireless devices and has not considered satellite transmitters. This paper investigates the use of AI-based solutions for the authentication of Low-Earth Orbit (LEO) satellites, which present unique challenges due to their non-standard electronics and specific characteristics. The study uses a large dataset collected from an extensive measurement campaign on the IRIDIUM LEO satellites and shows that Convolutional Neural Networks (CNN) and autoencoders can be successfully used for authentication with high accuracy. However, the number of samples required and the low bandwidth of the satellite link may limit the detection of spoofing attacks under certain configuration parameters.
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
(2023)
Article
Engineering, Electrical & Electronic
Kunrui Cao, Buhong Wang, Haiyang Ding, Lu Lv, Jiwei Tian, Hang Hu, Fengkui Gong
Summary: This article investigates reliable and secure communications for a wireless-powered NOMA system in the presence of multiple eavesdroppers. A proposed JAP scheme ensures system reliability and security, achieving better performance than benchmark schemes.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Telecommunications
Zhifeng Tang, Zhuo Sun, Nan Yang, Xiangyun Zhou
Summary: This paper proposes a new scheduling policy to minimize the cost of the age of information in a multiuser system. By introducing service charge and deriving closed-form expression for the Whittle index, the scheduling policy is designed to improve performance compared to existing policies, as demonstrated by numerical results.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Xinyu Huang, Yuting Fang, Adam Noel, Nan Yang
Summary: This paper proposes a novel imperfect transmitter model based on membrane fusion, and investigates key parameters such as molecule release and channel impulse response. The theoretical calculations are validated through simulations.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Chunhui Li, Shihao Yan, Nan Yang, Xiangyun Zhou
Summary: This paper proposes the use of channel inversion power control (CIPC) to achieve one-way ultra-reliable and low-latency communications (URLLC). By varying the transmit signal and power, the proposed CIPC schemes guarantee a constant power of received signal used for decoding the information. This method eliminates the overhead of channel state information (CSI) feedback, reduces communication latency, and utilizes multiple antennas to improve transmission reliability. The paper also provides analytical expressions for packet loss probability and optimization intervals for Q under imperfect and perfect channel reciprocity.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Akram Shafie, Nan Yang, Sheeraz A. Alvi, Chong Han, Salman Durrani, Josep Miquel Jornet
Summary: In this study, spectrum allocation for terahertz band communication systems is explored, taking into account the unique characteristics of THz channels. By dividing the spectrum of interest into sub-bands with unequal bandwidths and investigating the impact of sub-band assignment on multi-connectivity enabled systems, higher throughput can be achieved by enabling and optimizing adaptive sub-band bandwidth. The proposed sub-band assignment strategy outperforms existing strategies, particularly when selecting spectrum with the lowest average molecular absorption coefficient.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Chunhui Li, Changyang She, Nan Yang, Tony Q. S. Quek
Summary: Physical layer security (PLS) is promising for secure short-packet transmissions in ultra-reliable and low-latency communications. The application of PLS faces challenges including the lack of accurate channel state information (CSI) and high computational complexity. This study compares different scenarios and proposes optimal power control policies to address these issues. The results show that learning-based power control policies outperform existing policies, and knowledge of eavesdropper's CSI only brings marginal gain.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Zhuo Sun, Nan Yang, Chunhui Li, Jinhong Yuan, Tony Q. S. Quek
Summary: The proposed scheme introduces a transmit power control function for grant-free multiple access. A novel deep learning framework is designed to optimize the accuracy of device detection and channel estimation.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Xinyu Huang, Yuting Fang, Stuart T. T. Johnston, Matthew Faria, Nan Yang, Robert Schober
Summary: This paper investigates the channel impulse response of a molecular communication system with an absorbing receiver covered by multiple non-overlapping receptors. The analysis considers different sizes and arbitrary locations of the receptors as well as two types of transmitters. The results show that evenly distributed receptors result in a larger number of absorbed molecules. Moreover, compared to the ideal model, a practical model with membrane fusion-based transmitters and heterogeneous receptors yields lower performance in terms of peak CIR and average BER, highlighting the importance of analyzing practical TX-RX models.
IEEE TRANSACTIONS ON MOLECULAR BIOLOGICAL AND MULTI-SCALE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Lei Yuan, Qiuyu Du, Nan Yang, Fang Fang, Nan Yang
Summary: This paper investigates the performance of an intelligent reflecting surface (IRS)-aided short-packet communication system over Nakagami-m fading channels. The IRS is utilized to enhance the transmission from the base station to the far user in a non-orthogonal multiple access (NOMA) system. The study considers both continuous phase shifts (CPSs) and discrete phase shifts (DPSs) for the IRS and derives closed-form expressions for the average block error rate (BLER) in the high signal-to-noise ratio (SNR) regime.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Longfei Yan, Chong Han, Nan Yang, Jinhong Yuan
Summary: In this paper, an energy-efficient dynamic-subarray with fixed phase shifters (DS-FPS) architecture is proposed for terahertz hybrid beamforming, which compensates for the spectral efficiency loss caused by the fixed phase of FPS through a switch network and designs the hybrid beamforming matrices using a row-successive-decomposition (RSD) algorithm. A row-by-row (RBR) algorithm is further proposed to reduce computational complexity. Extensive simulation results show that the proposed DS-FPS architecture with the RSD and RBR algorithms achieves higher energy efficiency and robustness to CSI error compared to existing architectures.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Zhifeng Tang, Nan Yang, Parastoo Sadeghi, Xiangyun Zhou
Summary: In this study, we analyze and compare the optimal Age of Information (AoI) performance between the broadcast transmission scheme and the unicast transmission scheme for a multiuser system. We consider three packet management strategies for both transmission schemes and derive closed-form expressions for the average AoI achieved. By comparing the AoI performance in two different systems and conducting simulations, we validate our analysis and investigate the impact of system parameters on the average AoI.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2023)
Article
Computer Science, Hardware & Architecture
Akram Shafie, Nan Yang, Chong Han, Josep Miquel Jornet, Markku Juntti, Thomas Kuerner
Summary: This article delves into key areas for developing end-to-end THzCom systems, focusing on physical, link, and network layers. It discusses the areas of THz spectrum management, THz antennas, and beamforming, as well as the integration of other 6G-enabling technologies for THzCom. The challenges imposed by the unique properties of the THz band are identified, and main advancements and perspective research directions in each area are outlined to stimulate future research efforts for realizing THzCom in 6G and beyond wireless networks.
Article
Engineering, Electrical & Electronic
Jing Xu, Lei Yuan, Nan Yang, Nan Yang, Yi Guo
Summary: This paper analyzes the benefits of simultaneous transmitting and reflecting intelligent reflecting surfaces (STAR-IRSs) in short-packet communications (SPC) with non-orthogonal multiple access (NOMA) and statistical channel state information. By considering Rician fading and energy splitting protocol, the performance of STAR-IRS aided NOMA SPC systems with continuous and discrete phase shifts is analyzed. The relationship among average block error rate (BLER), power allocation, blocklength, and transmission and reflection coefficients is determined. Monte Carlo simulations are used to verify the theoretical analysis and examine the optimal transmission and reflection coefficients.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Zhifeng Tang, Zhuo Sun, Nan Yang, Xiangyun Zhou
Summary: In this paper, the average age of information (AoI) and the average peak AoI (PAoI) of a multiuser mobile edge computing (MEC) system are analyzed. Three different computing schemes are considered: local computing, edge computing, and partial computing. Closed-form expressions for the average AoI and average PAoI are derived, and upper and lower bounds on the average AoI are provided to examine the optimal offloading decision. Simulation results are used to verify the analysis and study the impact of system parameters on AoI performance.
IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY
(2023)
Article
Acoustics
Manish Kumar, Thushara D. Abhayapala, Prasanga Samarasinghe
Summary: The recent advances in Human-Computer Interaction and Artificial Intelligence have increased the importance of identifying human emotions. This study establishes the relationships between tonal frequencies of sound and emotions, providing a preliminary understanding of human emotion cues. The results show that there is a crossover point for four primary emotions in the frequency range of 417-440 Hz, and the frequency dependant relationships between emotion pairs Happy-Sad and Anger-Calm are approximately mirrored symmetric in nature.
